266320101 has 16 divisors (see below), whose sum is σ = 367935488. Its totient is φ = 171169200.

The previous prime is 266320099. The next prime is 266320127. The reversal of 266320101 is 101023662.

It is a happy number.

It is not a de Polignac number, because 266320101 - 2¹ = 266320099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266320501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19920 + ... + 30486.

It is an arithmetic number, because the mean of its divisors is an integer number (22995968).

Almost surely, 2^266320101 is an apocalyptic number.

It is an amenable number.

266320101 is a deficient number, since it is larger than the sum of its proper divisors (101615387).

266320101 is a wasteful number, since it uses less digits than its factorization.

266320101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10872.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 266320101 is about 16319.3168055529. The cubic root of 266320101 is about 643.3806309617.

Adding to 266320101 its reverse (101023662), we get a palindrome (367343763).

The spelling of 266320101 in words is "two hundred sixty-six million, three hundred twenty thousand, one hundred one".